Your Last Chance to See a Blue Moon Until 2015 is Friday Night
The last blue moon, seen during a partial lunar eclipse in December 2009. Image via Wikimedia Commons/Codybird
This Friday, look to the night sky and youll see whats referred to as a blue moonthe last time youll get the chance to glimpse this phenomenon until 2015. Those expecting to see a moon thats actually an unusual color, though, will be disappointed. The term simply refers to the unusual occurrence of a second full moon within one calendar month, and since we already had a full moon on August 2, this will be a blue moon, the first seen in the United States since December 2009.
Every 29.53 days, the moon undergoes a complete phase cycle, as the portion of its surface thats ilto entirely hidden on the to entirely hidden on the to entirely hidden on the to entirely hidden on the... [via Smithsonianmag - Science]